How to find Lyapunov Exponent for a non-linear time series in R/Python?

I am working on a project where I am using chaos theory to check if chaos is there in non-linear time series and use it for a neural network model. We need two parameters for finding chaos (using...

29 October 2020 3,289 3 View

Is there any other fluorescence dyes which can be used to stain bacterial cells like SYTO9?

Fluorescent staining and further microscopy is a powerful tool in studying microscopic strictures. Are there any other dye systems available that can stain bacterial cells as SYTO9 does?

08 April 2020 9,038 7 View

Can PFM phase image be useful to extract multi-state polarization level of ferroelectric thin films?

I want to polarize my ferroelectric PVDF-TrFE thin films in different directions and probe it using PFM. I know that PFM phase can read either 0o or 180o. Can it read any other orientation in...

05 March 2020 4,883 3 View

Why do some researchers consider "damage parameters" in concrete while others do not?

I have been reading a few papers related with the non-linear finite element analysis of RC beam under static loading, in Abaqus using CDP model. So far, I have found that some researchers use...

20 May 2019 469 4 View

Can anyone suggest an apparatus for measuring vibration of washing machine drum experimentally ?

Washing machine drum vibration - rotating drum - equipment for measurement

06 September 2018 7,671 3 View

Are there any ways to provide constraint between a 3D-Solid node(or Surface) and a 2-node (truss or beam element) in ABAQUS?

Consider a rebar welded on a base plate and load is applied on the lateral direction. Can you suggest some ideas to constraint the end of the rebar with the base plate in ABAQUS ? The attached...

22 April 2018 2,843 3 View

Additives for decreasing the thermal conductivity of polyetylene foams?

I am looking for additives/filler to decrease thermal conductivity of cross linked closed cell polyethylene foams? please advise me what kind of fillers I can use for my research purpose.

13 December 2017 1,489 3 View

What information can we get from the Exchange stiffness constant of ferromagnets?

12 April 2017 6,738 5 View

XRD phi scan of thin film substrate shows split peaks?

When I do a phi scan about the substrate peak, the phi scan peaks seems to be split or shows multiple peaks at the same value of Phi. And also omega scan about the substrate peak give multiple...

28 March 2017 9,580 3 View

Isolation of endophytic bacteria

What is the best method for isolation of endophytic bacteria from tuber (underground) portion of plant and hard plant part?

04 January 2017 3,596 7 View

Protein-aptamer gel electrophoresis help, please??

Hi, I have problems with running gel electrophoresis. I have tried agarose gel electrophoresis and native PAGE. I have two proteins, which have molecular weights of ~30kDa and ~180kDa and two...

03 March 2021 4,275 4 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Gel electrophoresis result for total RNA samples, 1.5 Agarose gel was used, How to improve the integrity of RNA?

Gel electrophoresis, RNA degradation, RNA extraction from fresh tissue

02 March 2021 5,433 5 View

How to regulate SSCP temperature in simple PAGE?

I'd like to perform single-strand conformation polymorphism (SSCP) in my thesis, however I cannot control the temperature of the vertical PAGE since we are using the conventional tanks. Is there a...

02 March 2021 9,157 1 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

Why are my bands weird in this Agarose gel?

Can someone please give me some possible things that could go wrong? Here is my recipe: 0.5g Agarose 50 mL of TAE 1x 1 uL ethyl bromide. Gel was run at 100V for 1 hour. The buffer used is also TAE.

01 March 2021 9,952 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Can water be extracted from Olivine?

I have always been interested in geology and wondered about how unique structures of materials behave in different circumstances. I stumbled upon Olivine, the magnesium iron silicate, and heard...

28 February 2021 7,330 4 View